I have no interest at all in seeing that guy preach to old Luke about using the Force.
It would be plain silly.

That is actually an excellent point - as far as 'preaching about using the force' is concerned. If we do see ghost Hayden and old Luke, I think they'd be more likely to talk about all the stuff that went down back in the day, or how to deal with the new problems.

Dunno if this has been mentioned before, but what if the main enemy can influence the force to stop himself from dying and therefore cannot be killed by anyone living and only a force ghost can defeat him? (I've read the Plagueis book and I'm convinced he's gonna be revealed as the main bad guy, and maybe he's been in hiding, abolished the rule of two, and building a Sith army - but that belongs in the other thread)

Could this actually be the way for Anakin to really fulfill the "prophecy"?

Force Ghosts in the ST scare me. The reason being, the main Force Ghost in the OT was Obi Wan. With Alec no longer with us, its going to be tough. I know we could use Ewan, but I think that would get confusing to the audience of noobs. Why is young OB1 made up and playing the Old Obi-Wan? I think its a bad idea.

What are the chances, do you think, of them using old stock footage of Alec from Episodes V&VI in VII-IX? I think it could work if you had him say only a few words and at least be a force ghost with Yoda.

I do think that there is a 99.9% chance that Yoda will be a force ghost throughout Episodes VII-IX, and probably beyond...

-C

I think they could very convincingly use a CGI Alec Obi-Wan, but I like the old footage idea if they have enough to work with.

Dunno if this has been mentioned before, but what if the main enemy can influence the force to stop himself from dying

I would actually assume this to be the case, given the Sith/Dark Side ideal of self-survival.

and therefore cannot be killed by anyone living and only a force ghost can defeat him?

this part of your idea sounds a little more... out there. It would certainly tie everything back to the whole 'saga of Anakin' idea if his ghost has a part in ending the new trilogy's main conflict, but I don't totally buy the idea of force ghosts being able to physically interact with the world, much less the villain.

I can definitely see them using Force ghosts in the ST. Like others have said, the most obvious would be Yoda or Obi-Wan (but they better have one hell of a good CGI Sir Alec Guiness) no offense meant to Ewan McGregor, but I don't want to see him as Obi-Wan's Force ghost. Anakin I can see come up to discuss the past with Luke.

However, I think it would be more interesting if a Sith Force ghost were to appear and start to turn a student of Luke's (if that is the story they go for) toward the Dark Side. Much like Exar Kun's spirit did to Gantoris in the JAT.

Dunno if this has been mentioned before, but what if the main enemy can influence the force to stop himself from dying and therefore cannot be killed by anyone living and only a force ghost can defeat him? (I've read the Plagueis book and I'm convinced he's gonna be revealed as the main bad guy, and maybe he's been in hiding, abolished the rule of two, and building a Sith army - but that belongs in the other thread)

Could this actually be the way for Anakin to really fulfill the "prophecy"?

This is an interesting (and even more surprisingly) a relatively sane theory.
Could be, could be.

Dunno if this has been mentioned before, but what if the main enemy can influence the force to stop himself from dying

I would actually assume this to be the case, given the Sith/Dark Side ideal of self-survival.

and therefore cannot be killed by anyone living and only a force ghost can defeat him?

this part of your idea sounds a little more... out there. It would certainly tie everything back to the whole 'saga of Anakin' idea if his ghost has a part in ending the new trilogy's main conflict, but I don't totally buy the idea of force ghosts being able to physically interact with the world, much less the villain.

Further meditation, this subject requires.

It's more the force ghosts can have more of an influence of the force itself so only they can actually prevent the bad force manipulator from, well, manipulating the force to stay alive and heal wounds. I know it's out there, but it kinda all fits. what do i know tho?

Dunno if this has been mentioned before, but what if the main enemy can influence the force to stop himself from dying and therefore cannot be killed by anyone living and only a force ghost can defeat him? (I've read the Plagueis book and I'm convinced he's gonna be revealed as the main bad guy, and maybe he's been in hiding, abolished the rule of two, and building a Sith army - but that belongs in the other thread)

Could this actually be the way for Anakin to really fulfill the "prophecy"?

This is an interesting (and even more surprisingly) a relatively sane theory.
Could be, could be.

Why is it surprising? I consider myself to be quite sane so why wouldn't my theories be as such?

I would love to see Luke as a Force ghost--in Episode X, which is set long after the ST. I really hope they won't take the easy route & have Luke die in VII just because Qui-Gon and Obi-Wan did the same thing in the first films of the other trilogies.

In the ST, tho, there likely wouldn't be much reason for Force ghosts. Obi-Wan would be too problematic, Haynakin would annoy a lot of fans, but Yoda could be done--provided they do up a CG Yoda model that matches the OT puppet, not simply reusing the ROTS model. Ghostly advice might be welcome if the new threat is something that maybe utilizes the Force in a different way or is otherwise unexpected in some fashion, but 'realistically', Luke (and Leia, if they ever appeared to her) would have gotten all the advice & history from them long before VII begins, probably in the few years following ROTJ. Learn more about Padme, about Anakin's specific failings, about some Jedi history if there wasn't much to be found, about other ways the old Jedi Order went wrong, etc. Things Luke didn't necessarily NEED to know, from Yoda & Ben's POV, in order to do the job of confronting Vader/become a Jedi Knight, but would be good to know afterwards as he goes about passing on what he's learned to others and bringing the Jedi back. The kinds of things the ghosts would've likely told Luke in the EU back in the '90s, if all the PT info had been known already, instead of just a couple vague appearances in stories set before the Thrawn Trilogy and Ben's dream-farewell in HTTE.

Anakin Ghost imparting Evil Sith Knowledge (that he's really, really sorry about. Really.) would make sense. Force Ghost Group Hug with Daddy and Yoda and Obi-Wan would not. Remember, Force Ghosts are basically used in the movie to drop exposition bombs and if anyone who is dead is gonna know stuff about the bad guy, that would most likely be Anakin Skywalker.

Well, what ever the case, I hope they explain why they didn't discover this secret years ago. For a thousand generations the Jedi Knights were the guardians of peace and justice in the Old Republic, so I find hard to believe that Qui-Gon was the first and only one to discover it.

I know a lot of you won't agree with this, but Ob1 has the connection with Luke. Yoda AND Ben are the ones who should appear to him. Obviously it can't be Sir Alec, so it has to be Ewan. It's a movie and actors change all the time. Close your eyes, take a couple deep breaths and just deal with the fact that Ewan McGregor is now Obi-wan Kenobi!!